I'd insist that he find a non-related handyman or change PM's.I agree a huge red flag to me is 24 hours of labor.

There is no Due on Sale Police, the loan is serviced by a Servicer who is paid just a few dollars per month to service the loan.

Providing superior service, cheaply.

Send them a written notice of non-renewal, following your local laws about how much notice you need to give.

If I have a problem with my newspaper delivery or something equally non-critical, I'd like an answer or fix  now, but if it's later today or tomorrow, not a big deal. 

So we had a non-paying tenant whose lease wasn't renewed and refused to leave.

Short-term rentals of non-owner-occupied properties will also require a special use variance which is obtainable by starting with the completion of an application in the Zoning Department."

Again, I’m not sure if these guys do this to everyone or if their customer service ability as partners is just terrible.

I would be very careful in working with a 1031 Exchange Qualified Intermediary that provides ("sells"0 replacement property solutions as part of their services. 

You would be violating Airbnb's terms of service.